Anderson Silva’s coach believes tainted supplement caused USADA failed test

Anderson Silva was removed from the UFC Shanghai main event bout with Kelvin Gastelum on Nov. 25 after failing an out-of-competition USADA drug test, and his team believes it was due to a tainted supplement.
Silva's conditioning coach Rogerio Camoes went on Brazilian TV show Revista Combate on Tuesday, and discussed “The Spider's" latest drug test failure.
“I'm with Anderson for many years and the first thing he said was, ‘Master, I didn’t take anything,’" Camoes sa